1897. Geological Survey (U.S.). Relief shown by contours.; Contour interval 20 feet.; "Henry Gannet, Chief Geographer, H.M. Wilson, Geographer in charge; Topography by Frank Sutto... U.S. Geological Survey (Washington, D.C).
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1902. Geological Survey (U.S.). Relief shown by contours and spot heights. 89 x 66 centimeters Scale 1:62,500 City Maps. U.S. Geological Survey (Washington).
1906. Geological Survey (U.S.). Shows mines. Relief shown by contours and spot heights.; "E.M. Douglas, Geographer in charge. Topography by R.H. Sargent. Triangulation by T.M. Ban... U.S. Geological Survey (Washington, D.C).
4. Camp Dodge
1918. Geological Survey (U.S.). Relief shown by contours and spot heights.; Title in upper right corner: Iowa, Camp Dodge quadrangle; at head of map: Topography.; "Surveyed in 190... The Survey (Washington, D.C).
1919. Geological Survey (U.S.). Relief shown by contours and spot heights.; Alternate title in upper right corner: Georgia, Camp Gordon and vicinity; at head of map: Topography.; ... The Survey (Washington).
1901. Geological Survey (U.S.). Relief shown by contours.; "Reconnaissance map."; "Survey in 1888."; "Engraved Oct 1891 by U.S.G.S."; Shows roads, and railroads.; Text on verso. 4... The Survey (Washington, D.C).
1918. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Surveyed in 1914-1916."; "1918."; Includes notes. 59 x 65 centimeters Scale 1:24,000 City Maps. U.S. Geological Survey (Washington, D.C).
1911. Geological Survey (U.S.). Covers most of Leavenworth County, Kan., and Platte County, Mo.; Relief shown by contours and spot heights.; "Surveyed in 1906-1909." 56 x 60 centi... The Survey (Washington, D.C).
1910. Geological Survey (U.S.) and Wilson, A. D. (W 106⁰19ʹ--W 106⁰13ʹ/N 39⁰16ʹ--N 39⁰13ʹ). Relief shown by contours and spot heights. "Surveyed in 1879. Railroads and some shafts added later.... The Survey (Washington, D.C).
1916. Geological Survey (U.S.). Relief shown by contours, spot heights and bathymetric isolines.; Title in lower right corner: Portland and vicinity; at head of map: Topography.; ... The Survey (Washington, D.C).